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The A-Z of A/B testing

February 15, 2016 by wpengine·0 Comments

Dr Shrividya Ravi spoke about the statistics of A/B testing at the Data Insights Cambridge meetup. It’s now live on the Metail YouTube channel, watch below or click here.

A – Z of A/B testing

Randomised control trials have been a key part of medical science since the 18th century. More recently they have gained rapid traction in the e-commerce world where the term ‘A/B testing’ has become synonymous with businesses that are innovative and data-driven.

A/B testing has become the ‘status quo’ for retail website development – enabling product managers and marketing professionals to positively affect the customer journey; the sales funnel in particular. Combining event stream data with sound questions and good experiment design, these controlled trials become powerful tools for insight into user behaviour.

This talk will present a comprehensive overview of A/B testing discussing both the advantages and the caveats. A series of case studies and toy examples will detail the myriad of analyses possible from rich web events data. Topics covered will include inference with hypothesis testing, regression, bootstrapping, Bayesian models and parametric simulations.

You can check out the slides below or alternatively download them here:

Data Insights Talk from shriv29

Preview of Data Insights Cambridge, 12 Nov 2015

November 6, 2015 by wpengine·0 Comments

As hosts of the excellent Data Insights Cambridge meetup, we’re excited for the upcoming talk by Dr Sacha Krstulovic from Audio Analytic Ltd. (who also happen to be our downstairs neighbours!). Dr Krstulovic will be speaking about ‘Filling the sensory gap in Big Data’.

What is Filling the sensory gap in Big Data?

Data analysis creates value by uncovering relationships between various types of data. Whilst there is lots of thought put into developing new data analysis techniques, this talk, on the other hand, focuses on the nature of the data itself. As a matter of fact, the evolution of technology across time has unlocked access to data layers of an increasingly rich and complex nature. As a consequence, new value propositions have arisen not only from new analysis techniques, but also from treating new types of data. Nowadays, this movement has reached as deep as allowing to think of humans as having an equivalent data self in various computer systems. However, at the cutting edge frontier of this movement, there is still an opportunity that is untapped, that of creating value from exploring one of the richest and hardest to reach data sets: human sensory data. As a case study, Audio Analytic is exploring this opportunity in the domain of acoustic data.

The Speaker

Dr Sacha Krstulovic is the VP of Technology at Audio Analytic, a company building a significant leadership in automatic sound recognition. Before joining AA, Sacha was a Senior Research Engineer at Nuance’s Advanced Speech Group (Nuance ASG), where he worked on pushing the limits of large scale speech recognition services such as Voicemail-to-Text and Voice-Based Mobile Assistants (Apple Siri type services). Prior to that, he was a Research Engineer at Toshiba Research Europe Ltd., developing novel Text-To-Speech synthesis approaches able to learn from data. He is the author and co-author of two book chapters, two international patents and several articles in international journals and conferences.

The meetup is scheduled for Thursday, November 12, 2015 at 7:00 pm at 50 St Andrew’s St, CB2 3AH. We hope to see you there, just sign up for it on the Data Insights Cambridge meetup page.